Peuplier hybride euraméricain près du Treppelweg zwischen Regelsbrunn und Haslau, Regelsbrunn, Autriche

Commentaires

Tim B, à 2012-11-12 11:08:43, a dit:

Hi, Jeroen can also change the species of trees, so Jeroen, feel free to do so when there is consensus. I have now done it myself.

Kind regards,

Tim

Conifers, à 2012-11-11 21:27:26, a dit:

Thanks! Yes, it has bark typical of true Populus nigra.

mrgreen, à 2012-11-11 20:04:07, a dit:

I have uploaded the original picture now but i will take it off later.

Here are also some historical pictures of the tree, if you are interested:http://www.wien.gv.at/umweltgut/public/identifyNaturdenkmal.aspx?id=ND_P.4787&mid=24f32749-7852-4ae8-bc5c-27bbc31fcdce&ftype=vienna:UMWELT.ND_P&g=e5ef1ea7-24f9-423e-9115-6a4b5bd462c7&cid=99df1080-8023-4cbc-8645-9e2776ffdb39

Conifers, à 2012-11-11 19:27:54, a dit:

Hi Mr Green - on a similar line, do you have a larger size original of this photo, please? It is probably correctly named, but I would like to see the bark pattern better to be sure. Thanks!

Conifers, à 2012-11-11 11:11:55, a dit:

You're welcome!

Tim will change it when he checks the discussion next time he logs on.

Jeroen Philippona, à 2012-11-11 11:11:35, a dit:

Hi Mr. Green,

Tim Bekaert, the webmaster, can change the species now the determination is sure according to the article. So you can ask him.

Jeroen Philippona

mrgreen, à 2012-11-11 10:50:07, a dit:

Hey Conifers,

thank you very much for this helpful explanation, i will take care of the difference in the future.

I can't change the specified from P. nigra to P x canadensis. Is there anything I should do about it? Maby contact someone to change it?

Conifers, à 2012-11-11 10:16:37, a dit:

Hi Mr. Green,

Danke!

Of the identity, I only suspected it was P. × canadensis before, I couldn't prove it. But the article says it has been proven now from genetic data. My evidence was the bark, which is deeply fissured with nearly parallel ridges (typical of P. × canadensis, like "||||"); in pure P. nigra, the bark is less deeply fissured, and the fissures are crossing, less parallel (like "XXXX") - the difference is easily visible by comparing with your photo of this tree which is typical of true P. nigra.

mrgreen, à 2012-11-11 08:14:29, a dit:

1. Yes that picture was taken after his death - I thougt I recorded that - sorry.

2. With all due respect - as far as I know, it is very hard to differentiate between the Hybrides and the genius in this case because it needs a biochemic-genetic proceed and consequently more than the knowlegde about the morphology. But I could be wrong, how did you determie that it is a Populus × canadensis?

best regards,

Mr. Green

P.S. Excuse me for the bad Englisch.

Conifers, à 2012-11-10 22:43:34, a dit:

Found this article:http://www.donauauen.at/?area=news&story_id=11554

Two points:

1. The tree is, sadly, dead.

2. It was (as I'd suspected from the bark in this photo) Populus × canadensis, not Populus nigra.

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